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3.2 Kernel Tuning

The amount of data created by the microphone array system is about 4.4 MBytes pe second if the frequency doubler is not activated otherwise, it goes up to 10 MBytes a second. To solve the possible packet loss problem, you have two ways:

• Tune the linux kernel,
• or upgrade the machine.

Tune the linux kernel

sysctl.conf is a simple file containing sysctl values to be read in and set by sysctl. sysctl is used to modify kernel parameters at runtime. The parameters available are those listed under /proc/sys/ here is a copy of the file in:/etc/sysctl.conf sysctl.conf

First you have to be logged as administrator on the machine. After changing your /etc/sysctl.conf you need to apply the settings. To do so, you have to enter the following command:

> sysctl -p

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Cedrick Rochet 2005-09-21